Post Office in-house lawyer appearing at Horizon scandal inquiry

Summary

1. The Post Office's former litigation lawyer, Rodric Williams, is giving evidence at the inquiry into the Horizon IT scandal
2. Williams, now the Post Office's head of legal for dispute resolution and brand, will be questioned over two days
3. Between 1999 and 2015, more than 900 sub-postmasters were wrongly prosecuted because of incorrect data from the Horizon IT system
4. Many sub-postmasters went to prison for false accounting and theft, and several were financially ruined
5. On Wednesday, former Royal Mail chairman Allan Leighton called the scandal "unbelievable"
6. You can watch the inquiry live by clicking the Play button at the top of this page